From the front as well as from behind - well, absolutely flat woman. Only one advantage is obvious - well-designed orifices. And of course due to the flat buttocks it's very convenient to pull your partner in the anus, even without bending her over. And I don't see anything else interesting in this lady! The man is basically of age, so probably the determining parameter for him is the age of the woman and the possibility to work her anally!
She's a good chick, and very interested in sex. When she caresses herself with her hand her eyes tighten like a veil! So where is the end of the video? It would be logical to assume that the pacified lady would now help to relieve the tension of a man and slowly and slowly suck his dick and bring him to orgasm. Where is the sequel?